Equipment and environmental inspection

Equipment integrity: Check whether the spectrometer host, optical fiber, power cord, standard sample and other accessories are complete, confirm that the appearance of the equipment is not damaged, and the control switch is sensitive.

Environmental adaptability: Ensure that the operating environment meets industrial standards, such as a temperature range of -10 ° C to 50 ° C, humidity ≤ 85%, and no strong vibration, electromagnetic interference, or corrosive gases.

Protective measures: Wear goggles, laboratory gloves, and avoid direct laser exposure to the eyes; If there is a lot of dust in the environment, equipment with a protection level of IP65 or above should be used.

Sample preparation

Sample processing: Select an appropriate sampling method based on the properties of the test substance. For example, liquid samples need to be filtered to remove impurities, while gas samples need to be sampled through an air curtain self-cleaning window to reduce contamination.

Concentration control: Adjust the sample concentration to the dynamic range to avoid signal saturation caused by high concentration or signal-to-noise ratio affected by low concentration.

2、 Startup and preheating

Power on

Connect the power supply of the spectrometer, observe if the indicator light is on, and confirm that the device has entered the self-test program.

Industrial grade equipment usually needs to be preheated for 10-15 minutes to reach a stable operating temperature for core components such as light sources and detectors.

software initialization

Open the accompanying spectral analysis software and check if the communication connection is normal.

Set basic parameters: integration time, average frequency, wavelength range.

3、 Parameter configuration and calibration

Sensitivity adjustment

Adjust the light source intensity according to the sample intensity to avoid detector saturation or weak signal to noise ratio caused by excessive intensity.

Example: If measuring low concentration gases, the light source power can be appropriately increased and the integration time can be extended.

Wavelength calibration

Use standard light sources or standard samples for wavelength calibration to ensure accurate position of characteristic peaks.

Industrial grade equipment is usually equipped with automatic wavelength calibration function to reduce manual intervention.

Baseline correction

Perform baseline calibration with the dark box cover open to eliminate the influence of background light and electronic noise.

Repeat the measurement 3-5 times and take the average as the baseline reference.

4、 Sample measurement and data collection

Sample placement

Place the sample in a colorimetric dish or sampling window, ensuring uniform distribution and no bubbles or sediment.

In industrial online monitoring, continuous sampling can be achieved through an automatic sampling system.

data collection

Click the "Measure" button on the software, and the spectrometer transmits optical signals to the detector through optical fibers.

High speed equipment can achieve 50-100 full spectrum acquisition per second, meeting real-time monitoring requirements.

real-time monitoring

Observe the stability of the output curve. If the fluctuation exceeds ± 1%, check the sample status or equipment parameters.

In industrial scenarios, an alarm threshold can be set to trigger an alarm when the characteristic peak intensity or wavelength shift exceeds the range.

5、 Data Processing and Analysis

data preprocessing

Smooth processing: Use moving average or Savitzky Golay filtering to reduce noise.

Baseline correction: Deducting the effects of dark current and background light to improve data accuracy.

feature extraction

Identify the characteristic absorption/emission peaks of the target substance, calculate peak height, peak area, or wavelength shift.

Example: In steel smelting, the furnace temperature is controlled by monitoring the characteristic peak changes of iron elements.

output result

Generate a spectral data report, including sample name, measurement time, characteristic parameters, and conclusions.

In industrial scenarios, data can be transmitted in real-time to DCS/PLC systems through Ethernet or Fieldbus protocols.

6、 Post operation maintenance

Equipment cleaning

After the measurement is completed, wipe the colorimetric dish and sampling window with an alcohol swab to avoid residue affecting the next measurement.

Industrial equipment requires regular cleaning of air curtain self-cleaning windows to prevent dust blockage.

data backup

Save the raw spectral data locally or in the cloud, with a recommended backup cycle of once a day.

long-term maintenance

Calibration cycle: Industrial grade equipment is usually calibrated every 3-6 months, and high-frequency usage scenarios can be extended to 1 year.

Replacement of vulnerable parts: Regularly replace components such as light sources and fiber optic interfaces according to the user manual.

Environmental monitoring: Regularly check the operating temperature and humidity of equipment to ensure compliance with the design scope.

7、 Safety and emergency response

safe operation

Avoid direct eye contact with light sources to prevent laser damage to the eyes.

Keep away from strong magnetic fields and high temperature areas during operation to prevent equipment damage.

Fault handling

Data abnormality: Check the sample status, fiber connection, or parameter settings, restart the device and re measure.

Equipment downtime: Industrial grade equipment is usually equipped with redundant power supply and automatic recovery function. If it cannot be resolved, it is necessary to contact the supplier for maintenance.

Environmental exceedance: If the temperature is too high, start the built-in cooling system of the device or pause the measurement.